Type-writing machine



` (N0 Model.) 8 sheets-sheet 1.

T. OLIVER. TYPE WRITING MACHINE.

w f a N "NN W 1 m.

w @w EI. l @d M -I II.

.w .m -I I t m Iu@ I I (No Model.)

8 Sheets-Sheet 2. T. OLIVER.

TYPE WRITING MACHINE.

(No Model.) s sheetssheet 3. T. OLIVER.

TYPE WRITING MACHINE.

No. 599,863. Patented Mar. 1,1898.

(No Model.) 8 Sheets-Sheet 4,

T. OLIVER. TYPE WRITING MACHINE.

No. 599,863. Patented Mar. 1895;*``

f/ EI y (No Model.) 8 Sheets-Sheet T.- OLIVER.

t N. WV E L Z m 0 m j l Z w m ,mk d UJ .m ...n n .N e Y T. Lb M a AP M GN m R W E P Y T.

' (No Mode-1.)' s sheets-sheen 6.

` T. OLIVER.

TYPE 'WRITING MACHINE.

(No Model.)` A 8' Sheets-Shet 7.

T- OLIVER.

TYPE WRITING MACHINE.

atented Mar. l, 1898.

8 Sheets-*Sheet 8.

(No Model.)

T. OLIVER. TYPE WRITINGMAGHINB.

'mi xmms Pneus CO.. PMvToLrrNm. wAsnlNnYoN. D. c.

- letters printed will be constantly in view of `NITED STATES PATENTrricrj.

THOMAS OLIVER, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-FOURTH TO FREDERICKA. EASTMAN, OF WOODSTOOK, ILLINOIS.

TYPE-WRITING NIACHINE.

SPECIFICATION forming part of Letters Patent No. 599,863, dated March 1,1898. Application led August 28, 1897. Serial No. 649,831. (No model.)

To all whom it 11i/ry concern.:

Be it known that I, THOMAS OLIVER, of Chicago, in the county of Cook andState of Illinois, have invented Vcertain new and useful Improvements inType-Writing Machines; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to improvements in type-writing machines of thatkind shown in my prior patent, No. 562,337, dated June 16, 1896, andhaving a revolving platen or cylinder against which the paper is heldduring the act of printing, which platen is mounted in anendwise-movable carriage and wherein the types are mounted on swingingtype-bats located above the platen and arranged to swing on horizontalaxes arranged transversely to the platen, so that the types will strikedownwardly upon the platen and the the operator. Several of theimprovements herein described and claimed may, however, be applied totype-writing machines of other Y kinds.

In the accompanying drawings, Figure 1 is a view in central verticalsection of a typewriting machine embodying my invention. Fig. 2 is aplan view of said machine with the paper-carriage removed to show theparts beneath the same. Fig. 3 is a view of the machine from beneath,showing the base-plate and the parts immediately adjacent thereto. Fig.4 is a plan view, on an enlarged scale, of the paper carriage removedfrom the machine. Fig. 5 is a view in front elevation of thepaper-carriage. Fig. 6 is a view of the paper-carriage as seen frombeneath. Fig. 7 is a plan section of the carriage, taken on line 7 7 ofFig. 5. Fig. 8 is a detail end View of the carriage-frame, showing thedevices for actuating the platen to effect the line-feed. Fig. 9 is anenlarged sectional View of the said carriage, taken on line 9 9 of Fig.4. Fig. 10 is a longitudinal section taken on line 10 10 of Fig. 3,illustrating more in detail the devices for shifting the platen. Fig. 11is a detail section taken on line 11 11 of Fig. 10,

. ber pawl.

illustrating the devices for varying the extent of line-feed. Fig. 12 isa detail section of the carriage, taken on line 12 12 of Fig. 5, showingthe arms which support the paper-feeding rollers. Fig. 13 is a detailsection of the carriage end plate, taken on line 13 13 of Fig. S,showing' the actuating-lever for the platenholding pawl. Fig. 14 is aview in perspective of the universal bar, the letter-spacing devices,and the ribbon-throw. Fig. 15 is a front elevation of l[he ribbon-throwand letterspacing devices. Fig. 16 is a plan section of the escapemechanism, taken on the line 16 16 of Fig. 15. Fig. 17 is an elevationwith parts insection of the escape-wheel and stiff and limber pawls,taken on line 17 17 of Fig. 16.

Fig. 18 is a view in side elevation of the same l parts, showing achanged position of the lim- `Fig. 19 is a detail end elevation of theshifting frame which supports the carriage. Fig. 20 is a detailsectional view taken on line 2O 2O of Fig. 19, showing the rollerbearingwhich takes the end thrust of the shifting frame and the adjustablemarginstop. Fig. 21 is a sectional plan view of the parts shown in Figs.19 and 20, taken on line 21 21 of the same figures. Fig. 22 is a detailcross-section taken on line 22 22 of Fig. 2, showing the carriage-shiftkeys in side elevation. Fig. 23 is a detail view of the rockshaft whichforms part of the carriage-shiftin g devices. Fig. 24 is a detailsectional elevation taken on line 24 24 of Fig. 3, showing theribbonspool and ribbonfeeding devices. Fig. 25 is a detail section takenon line 25 25 of Fig. 24, showing in side view the worm-gear of theribbon-feeding devices. Fig. 26 is a detail plan view of one of thetype-bar frames and the ribbon-spool case thereon, with the cover ofsaid case removed. Fig..27 is a view in side elevation of one of theribbon-spool cases with the cover thereon. Fig. 28 isa detail side viewof a part of one of the keylevers, showing the spring-arm by which thetype-bar link is connected with said lever. Fig. 29 is a detail planview of the parts shown in Fig. 28. Fig. 30 is a detail plan view of theparts below the carriage at the left-hand side of the machine.- Fig. 31is a detail section taken on line 31 31 of Fig. 30. Fig. 32 is a detailsection of the rear support ofl the IOD shifting frame, taken on line 3232 of Fig. l. Fig. is a detail vertical section taken on line 33 83 ofFig. 32. Fig. 34 is a detail seetion taken through the line stop-blockon line 3e 33t of Fig. 5. Fig. 35 is a plan view of the line stop-blockremoved from the machine.

As shown in said drawings, A designates the base-plate et the machine,consisting of a fiat horizontal flanged metal casting, and B B thekeylevers, which extend from the front to the rear of the machine, aboveand generally parallel with the base-plate, and are pivotally supportedat their rear ends by means of transverse pivots ZJ, supported instandards A on the base-plate. Said levers are divided into two groups,in cach of which the rear ends of the levers are brought together andpivoted to one of the standards, as clearly Seen in the plan view, Fig.2. At their front ends the key-levers engage a vertically-slottedguide-bar A2, attached to the base-plate, Figs. l and 2.

The several key-levers are lifted and held normally in an elevatedposition by means of springs B, Fig. l, herein shown as made of U formand located between the base-plate and the key-levers.

C C indicate the type-bars, which are of loop or U form and are attachedto such shafts C C', which are mounted in supporting-frames D D. Thetype-bars are arranged in two groups at opposite sides of the center ofthe machine, so as to swing on horizontal axes and act on a platen orpaper-supporting roller E, which is located in position t'or the actionthereon of the type-bars of both groups and is mounted in anendwise-movable carriage which is moved or shifted endwise to feed theplaten and the paper thereon past the printing or striking point of thetype-bars. The supporting-frames D overhang the platen E, Fig. l, andare attached to posts or uprights D on the base. Said type-bars areprovided at their central parts with type-heads C2 and are actuated fromthe key-levers by means of upright links c, which are pivoted tocrank-arms c on the type-bars. The supporting-frames D are provided withyokes D3, to which are attached inclined supports or rests D4, providedon their inner faces with impact-cushions C3, against which the rearsides of the type-heads rest when in their normal or retracted position.

The type-bar heads carry each a plurality of type-faces or types,preferably three, whereby an upper and lower case letter and a numeralor a punctuation-mark may be arranged on each type-head, the platen andits carriage being movable and controlled by suitable shifting devices,so that either of the types on the type-heads may be printed from atwill.

As an improvement in the arrangement of the type-bars of a machine ofthe character described I purpose to arrange the same with their pivotalaxes at an angle with respect to the central axis of the platen and withthe axes of type-bars in the two groups at opposite angles, so that theaxes belonging to the two groups diverge from each other from front torear. This construction is plainly seen in the drawings, Fig. 2, whereinthe supportingframes D D are angularly arranged with rcspect to theposts or uprights D', and the roek shafts or spindles C arecorrespondingly inelined.

The oblique arrangement of the type-bars described results in bringingthe printing or contact point at which the types strike the platenrearwardly of the points at which the types rest when retracted. Thisconstruction aiords a wider space or opening at which the paper isexposed to the eye of the operator and enables more of the writing to beseen at one time. The construction described, morcover, by bringing thecontact-point to the rear of the center of the type-bars affords morespace for the carriage and the platen at the rear of the standards whichsupport the bearings for the type-bars and thereby permits the use of alarger platen while making the machine lnore compact and stronger thanin the case in which the type-bar axes are arranged at right angles withrespect to the platen.

As an improvement in the means for transmitting motion from thekey-levers to thc type-bars I have provided an elastic or resilientconnection between said parts of a sufciently yielding character tosoften or cushion the blow when the fingers strike the keys, but not soyielding as to interfere with the prompt and positive action oi' thetype-arms. Asapreferred form of such elastic connection I interpose aspring betweenr the key-lever and the connecting rod or link c', and Imake this spring in the form of a spring-arm B2, Figs. 28 and 2f), whichspring-arm is arranged in a vertical plane and secured against the sideof the key-lever, the spring-arm being rigidly attached at one end tothe typelever and having its opposite or free end engaged with the link.The yielding or resilient connection in this instance is aiiorded by theyielding of the spring-arm edgewise in a vertical plane. The saidspringarm B2 is shown as attached to the key-lever at the rear of thelinks c and adjacent to the upper edges of the type-levers by means ofrivets inserted through the rear end of the arm. Said arm is also shownas having at its free end a tooth or projection b', which projectsthrough an eye in the lower end of the link, the upper type-lever beingnotched or cut away adjacent to the end of the spring-arm to aifordroom for the said eye. As a means for holding the link in engagementwith the said tooth b the metal of the key-lever is slit on a line withthe bottom of the notch, so as to form a tongue b2, the end of whichstands opposite the end of the spring-arm and thereby holds the linkfrom outward movement. Said tongue b2 may obviously be bent laterally topermit the disconnection of the link from or its connection with thespring-arm. To hold the spring-arm IOO IIC

from lateral movement or displacement, the same is shown as providedwith a depending part or arm b2, in vwhich is formed a vertical slot h4and through which is 4inserteda stud b5, which is secured in thekey-lever, the said stud being loosely inserted in said slot to permitthe end ofthe spring-arm to move freely in a vertical direction.

The employment of a spring or resilient connection between the key-leverand the typearm has the effect in all cases of making the action of thekeys easier and more agreeable to the operator, but these advantages areespecially marked in the case of metal key-levers, which, by reason oftheir inelastic quality, tend to give a harsh and unpleasant action ifno such elastic connection be employed.

The paper-carriage frame in the preferred construction illustratedconsists of two end plates E E', a longitudinal bar E2 at the lowerfront part of the frame which constitutes the rack-bar of the spacingmechanism, and a rear frame-bar E2, Fig. 6. The said carriage is mountedto slide endwise on a shifting frame, which consists of a transverseguidebar F, Figs. 1, 2, and 19, a horizontal yokev.piece F', extendingrearwardly therefrom, a

horizontal rear guide-bar F2, and a horizontal rearwardly-extendingguide-rod F2, which is attached to the rear end of the yoke-piece F andslides in a bracket F4, attached to the rear part of the base-plate.

The devices illustrated for sustaining the shifting carriage-frameconsist of two rocking standards G G, which are located beneath theouter ends of the frame-yoke F', and a similar standard G,locatedbeneath the guiderod F2, Figs. 1 and 22. Each of said rocking standardsconsists of a flat plate curved at both its upper and lower ends to formcircular arcs which are segments of the same circle, so that when theshifting frame is moved backward or forward it will remain in the samehorizontal plane. rllhe upper and lower ends of the standards arelongitudinally grooved and engage at their upper ends with dependingflanges g g on the ends of the yokepiece F and a similar flange g on theguiderod F3. At their lower ends the several standards are engaged withvertical flanges g2, which rise from plates G2, Fig. 22, which areadjustably attached to the machine baseplate. For adjustably connectingthe said plates G2 with the base-plate tubular screwplugs g3 areinserted through the base-plate and bear against the plates G2, andholdingscrews g4 are inserted through the said plugs and are engaged attheir upper ends with screw-threaded holes in the plates. The saidstandards are also provided at their ends with central notches g5, whichare engaged by pins g, which are inserted through the ilanges g2 andserve to loosely confine the rockers and hold them from backward orforward movement. To hold the forward end of the shifting frame fromrising, the yoke F is provided with horizontal arms f f, which extendoutside of the standards D D,beneath' studs f time the weight of therear part of the shifting frame will be carried entirely by the rockingstandard G. For so supporting the bearing-ring F5 the opening or recessin the standard is made somewhat larger than the ring, and the ring isheld or confined in position by means of two horizontal set-screws f2f2, which pass through the sides of the standard and engage the outerface of the ring, and a third set-screw f3, which is inserted verticallythrough a removable cap-piece F6 and engages a holding-recess in the topface of the ring. The cap-piece F6 is connected with the standard at oneside of the recess by a pivot f4, and is held at the opposite sidethereof by a removable pivot-pin f5, so that said cap-piece withset-screw thereon` may be easily swung back or lifted for the purpose ofdisengaging the holding-recess in the ring, and thus permit the ring tobe removed endwise out of the recess, so that the rod may be liftedtherefrom in taking the shifting frame out of the machine. The lateralset-screws obviously afford lateral adjustment of saidbearing-ring,while the top set-screw enables the ring to be adjustedvertically.

The backward-and-forward movement of the shifting frame is limited bymeans of adj ustable stops or nuts f6 f6, placed on a screwthreaded partof the stem F3 at either side of a standard F7, which rises from thebase-plate and is provided at its upper end with a notch through whichthe stem freely passes.

In order to resist the tendency to endwise movement in the shiftingframe due to the pull of the carriage-actuating spring upon thecarriage, devices are provided as follows: Attached to the yoke F of theshifting frame, at a point near Vthe center of the machine and at therear of the guide-rod F, is a metal block F8, Figs. 2, 20, 21, and 30,said block being provided with a horizontal groove or recess in its sideface and having mounted in said groove or recess two antifrictionalrollers f8, which project beyond the sides of the block and are adaptedto bear against a vertical guide flange or plate F2, which extends fromfront to rear of the machine and is herein shown as formingpart of ablock or standard F1", which rises from the base-plate of the machine.The block F8 isherein shown as attached to the yoke-piece F by means ofa holding-screw ff, which passes vertically through the block into thesaid yoke-piece.

AThe upper end of the standard F10 is shown as provided with a ange F11,arranged par- IOO,

IIO

allel with the guide-ange F9 and forming a groove or recess in which theblock FS rests and moves. The said flange F11 serves to hold theshifting frame from movement to the right, but is normally free fromcontact with the block F8, so as to avoid frictional resistance tothebackward-andforward movement of the shifting frame. In order to afford ameans for adjustment of the guide plate or Hange F9 to the right orleft, said guide-plate is separated from the body of the standard F10 bya vertical slot flo, Figs. 2O and 21, which reaches nearly to thebaseplate, and a set-screwf11 is inserted through the guide-plate andinto the body of the standard, the said slot giving sufficientelasticity to thelower part of the plate to enable the upper part of thesame to be swung or moved to the slight extent needed by tightening orloosening said set-screwfu.

The paper-carriage is sustained at its front edge upon the guide -bar Fby means of grooved supporting-rollers E4, Fig. 9, which are preferablytwo in number, Fig. 6, and are mounted on pivot-pins inserted throughdepending lugs on the bar E2 of the carriage, and the carriage is heldfrom rising or being lifted from its place at its front edge by means oftwo lugs c e on the carriage-frame, which extend downwardly and beneaththe guide-bar F. The rear part of the carriage is sustained by lneans ofa supporting-roller II, Figs. l and G, which is mounted on an arm lI,attached to the rear frame-bar E3 of the carriage-frame and which restsand travels on the rear guide-rod I`2of the shifting frame in theendwise traverse of the carriage. To hold the carriage from rising atits rear part, a stop-arm II2 is secured to the rear framebar E in suchmanner as to extend beneath the said rod F2.

The shifting frame is so constructed that the platen E and its carriagemay be shifted in either direction from a central point, the carriagebeing shifted baekwardly for one set of types or characters andforwardly for another set, while it remains immovable or in its centralposition for the third or intermediate set of types. To accomplish suchmovement of the carriage backward and forward from its central position,devices are connected with the shifting frame as follows:

I I', Figs. 2 and 22, represent shifting levers having their keys i t"in the keyboard, preferably at the left-hand side of the same, andpivoted at their rear ends to a standard I2, rising from the base-plateA, Fig. 2, said levers being guided in a vertical slot formed in theleft -hand end of the guide bar A2. Mounted on the frame-base at therear of the guide-plate A2 is a rock-shaft J, Figs. l, 2, 22, and 23,which extends from a point beneath the shifting levers to the center ofthe machine and is provided with two laterally-extending crank-arms J J'and an upwardlyextending crank-arm J2. The crank-arm J2,

Figs. 3 and 29, is located near the center of the machine and isconnected with the shifting frame by means of a rearwardly-extending rodJ3, Figs. i9 and 22, the rear end of which is pivoted to a depending armF12 on the central part of the yoke F of the shifting frame, Figs. if),20, and 2l.

The two crank-arms J J' extend one forwardly and the other rearwardlyfrom the rock-shaft at an upward inclination and are provided at theirends with notches j j, Fig. 22, located in the end faces of the arms. Onthe base-plate of the machine adjacent to the ends of said arms are twostationary plates J "l J 1, provided with notches j'j, which areopposite the notches in the crank-arms when the shifting frame is in itsnormal position.

Pivoted to the shifting levers I I are two depending links J5 J2',carrying at their lower ends lateral studsj2j2, which are adapted forengagement with either the notches j or j'. Said notches are inclined oroblique, and lifting-springs I2 I2, applied to the shifting levers,normally retain the said studs in the outer or stationary notches Whenone of the shifting levers is depressed, the stud y2, carried thereby,first slides inwardly from the notch j' into the notch j in the end ofthe crank-arm, and after becoming engaged with said crank-arm acts onthe latter to depress the same and thereby give movement to therock-shaft and shifting frame. Provision is made for confining the studwithin the notch of the crank-arm during the time said crankarm ismoving downwardly from its normal position, that herein shown consistingof a curved guide surface or arm on the stationary plates J4, the samebeing curved concentrically with the rock-shaft and arranged to keepclosed the open end of the notch throughout the swing of the crank-arm.Obviously the crank-shaft will always be free to be turned .in eitherdirection upon the depression of either key, the shifting of the studsinto the stationary notches leaving the crank-'arms entirelydisconnected from the shifting keys except when one of the same is beingoperated.

The shifting levers are provided with stop projections fj, adapted forcontact with a laterally-projecting arm F15 on the shifting frame, Figs.22, 30, and 3l, so as to limit the movement of the same and hold thecarriage immovable when in its central position. To hold the carriagefor some length of time in its shifted position, a hand-lever K, Fig.22, is arranged vertically between the levers Z and Z and is pivoted atits lower end to the guide-bar A2, said lever K being provided withoutwardly-facing stop-shoulders located in such position as to holdeither one of the spacing-keys depressed.

A spring-actuated mechanism is provided for giving motion to thecarriage and also a spacing or feed device by which the carriage isallowed to move under the action of said IOO IIO

spring one space at each time a key is depressed for printing a letter,.these parts being made as follows:

K, Fig. 1, indicates a drum which contains Va carriage-actuatin g springand has wrapped about it a strap K2, the free end of which is attachedto a Vhook k3, Figs. 5 and 6, on the carriage-frame. Said drum isattached to the vertical shaft K4, which extends downwardly through'thebase of the machine and is provided below the base with a ratchet-wheeland escapement-lever, (shown in Fig. 3,) by which the tension of thespring may be regulated.

Thespacing device for effecting the letterspacing operates in connectionwith the carriage rack-barE2,hereinbefore referred to, and isconstructed as follows: g

L, Figs. 1 and 14, indicates an upright escape-wheel shaft mounted onthe front of the shifting frame near the center ofthe machine.

Said shaft carries at its upper end a gear-pinion L', adapted to engagethe rack-bar E2 of the carriage-frame, Fig. 1, and at its lower end anescape-wheel L2. the shaft L is adapted to move toward and from therack-bar about an axis of oscillation located adjacent to theescape-wheel. The said shaft engages at its lower end a bearingaperturein a horizontal bar F13, which is attached to the lower end of the armF12 on the shifting frame, Figs. l, 19, and 20, the bearing-aperturebeing made of slightly-clon gated shape to afford the necessaryfreedom'of movement in the upper end of Ithe shaft. The said upper endof the shaft L passes through a sliding block L3, which is mounted in aguideslot in an arm or bracket F14' onv the shifting frame. Thebearing-block L3 is held normally in its rearward position, and the saidpinion is retained in mesh with the rack-bar by means of a coiled springL4, which is in-v serted in the slot of the bracket F11, between theplate, which closes the front end of the slot, and the said block L3.

To now describe the escape device by which the escape-wheel L2 isallowed to-turn step by step and the carriage allowed to advance underthe action of the carriage-actuating spring when the several keys areoperated, the same is constructed as follows:

Mis an oscillatory escapement-lever, Figs. 14, 15, 16, 17, and 1S, whichextends from front to rear of the machine and is pivoted on thedepending arm F12 of the shifting frame, so as to swing in a verticalplane, with its forward end at one side of and adjacent totheescape-wheel L2. Said lever carries stiff and limber pawls m m, whichare adapted for engagement with the teeth of the escape-wheel, so as topermit the wheel to turn tooth by tooth when the lever is oscillated.The stiff pawl fm has the form of a rigid projection or tooth on the endof the lever M, and the limber pawl m' is pivotally supported atitsupper end by means of a transverse pivot m3 upon the upper end of astandard on said The upper end ofl lever, so as to swing in a verticalplane parallel with the axis of the escape-wheel. The stiff pawl m isadapted for alternate engagement with and disengagement from the teethof the escape-wheel by vertical movement or oscillation of the front endof the lever M, the said stiif pawl being adapted for engagement withthe teeth ofthe wheel when the lever is elevated. The limber pawl isalso adapted for engagement with and disengagement from the teeth 0f theescape-wheel by the vertical movement of said lever M, said pawl forthis purpose being arranged above the stiff pawl lm., Fig. 15.

TheV vparts are so arranged that when the escapement-lever is depressedthe lower part of the limber pawl fm. will engage the teeth of theescape-wheel, and when it is elevated the stiff pawl m will be engagedby the said teeth and the limber pawl will be released therefrom. A backstop m5 for the limber pawl is formed by means of an upward projectionon the lever M, and a front stop for said limber pawl is formed byprojection 'm6 on the upper end of the limber pawl, which is adapted forcontact with the upper end 'of the standard 'm3, Fig. 17.v lThe limberpawl is held normally in contact with the-back stop by means of asuitably-applied spring, herein shown as having the form of a coiledspring m7, Figs. 16 and 17, placed around the pivot m3 of the limberpawl. The escape-wheel turns in a direction to carry the limber pawltoward the back stop m5 when engaged with said pawl against the actionof the spring m1, as clearly seen in Fig. 17, and holds it in contactwith the same. When the parts are at rest, the escapement-lever standsat the lower limit of its movement and one tooth of the escape-wheelrests in contact with the limber pawl, which holds the escape-wheel fromturning. When the escape-lever is moved soas to lift its free end, thelimber pawl will be lifted until free from the escape-wheel, at whichtime the tooth previously engaged by IOO IIO

the li mber pawl will come in contact with and 4 be arrested by the stipawl m, while the limber pawl will be released and under the action ofits spring m7 will return to its forward position, as seen in Fig. 18.Upon the subsequent descent of the escape-lever the teeth of theescape-wheel in contact with the stiff pawl willbe released, so as topermit the turning of the wheel; but in the descent of the escape-leverthe next succeeding tooth will be caught by the descending limber pawl,which will be moved lthereby until arrested by the back stop, thuspermitting the turning of the escape-wheel a distance of one tooth ateach oscillation of the escape-lever. The said limber pawl is providedwith a separate yielding lower part or section m8, which immediatelyengages the teeth of the ratchetwheel and is connected by a pivot m1with the-m ain part of the limber pawl in such manner that it will swingforward from its operative position under the pressure of theescapewheel teeth, but will be held from any backward movement from suchoperative position by a suitably-arranged stop-arm m10, which extendsrearwardly from the lower part m8 and bears against the rear surface ofthe upper part adjacent to the pivot connecting the same, as clearlyseen in the drawings, Figs. 17 and 1S. The said yielding section m8 isheld normally in its operative position by a suitably-applied spring,herein shown as having the form of a coiled spring m11, placed aroundthe pivot mf and bearing at its ends against the two parts of the pawl.The said yielding part or section m8 being free to swing forward allowsthe escape-wheel teeth to move freely past the limber pawl if theescapewheel be turning rearwardly or in the reverse direction from thatin which it turns during the usual operation of the spacing mechanism.The construction of the limber pawl with the separate yielding sectiontherefore enables the carriage to be thrust backwardly or returned toits starting-point for a new line without disengaging the escape-wheelshaft from the rack-bar, thereby rendering the employment of the devicesprovided for this purpose unnecessary, except when it is desired torelease the carriage and allow it to move backwardly for inserting aletter at a desired place in the line, which is done in makingcorrections or under like circumstances.

Now referring to the means illustrated for giving motion to theescape-lever, these parts are constructed as follows:

O, Figs. l, 2, 3, and 11, indicates a transverselyarrangedvertically-movable spacebar located beneath and adapted for actuation byall of the key-levers. Said space-bar is attached to the rear ends oftwo arms O, Fig. l-l, the forward ends of which are rigidly attached toa rock-shaft O2, having bearings at its ends o in lugs o' on thebase-plate, as seen in Fig. 1. The said space-bar O is connected withthe said rock-shaft O2 not only by the arm O,located at the ends of saidbars, but also by means of an intermediate bar O3, Fig. 14, which isintersected by a transverse frame-bar O4, these parts constituting arigid space-bar frame. The escape-lever M is operated directly from thebar 0 by means of a slotted yoke O5, Figs. and la, which is pivoted tothe rear end of the lever M and is provided in its lower part with ahorizontal slot o2, adapted to receive a stud o3, which is secured inthe rear end of said lever. Said yoke 0" has a vertical shank or stemO6, which has vertically-slidin g engagement with a stationaryguide-block O7, Figs. l and 19, which, as herein shown, is formed on therear end of the bar F13, Fig. 19. Through the medium of the slotted yokeO5 vertical movement of the space-bar is transmitted directly to theescapement-lever M, while backwardand-forward movement of said leverwith the shifting frame is permitted by the said slot o2 withoutaffecting the action of the escape devices.

The intermediate arm O3, which connects the space-bar O with therock-shaft O2, as above described,aifords means for connecting aspace-key P, Figs. 1,2, and 3,1ocatedin front of the keyboard, with thesaid escape devices. The said space-key P is attached to two parallellevers P', which are pivotcd at their rear ends to depending lugs P2 P2on the baseplate (shown in Figs. 3 and 2l) by means of pivots p p,around one of which is placed a coiled springp, which acts to hold thespacekey normally in its elevated position. At a point forward of thepivot-lugs Piacross-bar P3, Figs. l and 3, rigidly connects the leversP', and said cross-bar is connected with the space-bar frame by means ofa vertical bolt P4,having a nut at its lower end, which forms anadjustable stop against which the crossbar acts. f

rlhe space-bar frame is thrown upwardly and the space-bar held incontact with the key-levers by means of a volute spring P5, the innerend of which is attached to the rockshaft O2 and the outer end of whichis connected with the base-plate by means of a screw P6, by which thetension of the spring may be adjusted. rl`wo upwardly-pressing springsPT Pare arranged beneath the spacebar O in position to be struck by saidbar when the same is depressed,said springs serving to gradually arrestthe downward movement of the space-bar when the keys are struck. Thesprings P7 PT are shown as made of U form, with their lower horizontalarms secured to the base-plate beneath the same and their upper armsapertured andengaged with vertical guide-posts P8 PS on the base-plate.Adjustment of the tension of said springs is afforded by a cross-bar P,which extends beneath and in contact with the lower parts of the springsand which is connected with the base-plate by means of anadjusting-screw p2.

Devices are provided for moving the upper end of the shaft L and thepinion L thereon away from the rack-bar of the carriage for the purposeof releasing said carriage from the spacing devices when it is desiredto shift or move the carriage backward to insert a letterin makin gcorrections or at other times, as follows: Above the rack-bail?, Figs.l, 7, and 9, is a longitndinally-arranged horizontally-movablereleasing-bar Q, arranged to slide obliquely on the rack-bar and held inplace thereon by studs q `q,which engage oblique slots q q/ in the saidbar. The outer or working edge of the bar is adapted to engage anantifriction-roller Q', Fig. 1, mounted on the upper end of the shaft L,above the said pinion L,whcn the said bar is advanced. A suitablyappliedspring, in this instance having the-form of a U-spring q2, is engaged atone end with a stud on the rack-bar and at its other end with thereleasing-bar and serves to throw the latter cndwise and rearwardly, andthereby tends to hold it in its retracted position. For actuating saidreleas- IOC IIO

ing-bar an endwise-sliding trip-rod Q2, Fig. 7, is arrangedlongitudinally above said releasing-bar, said trip-rod extending beyondthe end of the carriage at the left-hand side of the machine and havingon its end a iinger-piece or button Q2. The trip-rod is held in place bya stud g3 in the rack-bar, which engages a slot Q4 in the trip-rod, andthe inner end of the trip-rod abuts againsta shoulrod the pinion will bereleased from the rackbar and will remain free therefrom, and thecarriage may be moved freely so long as such pressure is maintained.

As an improved construction in automatic line-spacing devices for theplatens of machines of that class in which the platen is turnedautomatically a line-space at a time at each movement of the carriagebackward to a starting-point I have provided devices which are moreclearly shown in Figs. 8 to 13 and are constructed as follows: Mountedon the platen-spindle R is a ratchet or gear wheel S, through which theplaten is turned for line-spacing and by which it is held from turningas the line is being printed, said gearwheel being located outside ofthe end of the plate of the carriage-frameat the left-hand side of themachine. An oscillating platenactuated arm S' is-mounted on the carriageconcentrically with the axis of thev platen, said arm preferably beingmounted on the said spindle. In connection with said arm is employed anoscillating gear segment S2, which is also mounted concentrically withthe axis of the platen, preferably by being also mounted upon the saidspindle R. Said gearsegment S2 has a bearing-aperture s, through whichthe outer portion of the arm S' passes, said outer portion beingparallel with the said spindle-arm, Fig. 10. The gear-segment S2 isarranged concentrically with the platenshaft and intermeshes withanother gear-segment S5, which is mounted to swing horizontally on thelower part of the carriage-frame,

the same being herein shown as supported upon a pivot-stud s', which issecured in the rack-bar E2 adjacent to the end plate of thecarriage-frame. rlhe platen-actuating arm S', together with thegear-pinions S2 S3, is moved in oneA direction by a spring, herein shownas having the form of aleaf-spring S4, secured to the bar E2 and bearingat its free end against a rigid arm s2 on the segment S3. Said parts aremoved in opposition to'the said spring'by means of a cam-plate S5, Figs.2 and 80, which is mounted on the carriagesupporting frame and isprovided with an Oblique edge s3, adapted for engagement with obliquesurface 33 in the backward movement of the carriage, and said swingingmovement of the gear-segment S3 will be transmitted to the gear-segmentS2 and from the same to the actuating-arm S', which engages saidgearsegment. Said 'actuating-arm S' is movable endwise with respect tothe gear-segment S2, and the free end of said arm is so arranged thatwhen the arm is thrust inwardly it will engage one of the` notches ofthe ratchetwheel S, but when retracted, which is its normal position,will be free from said ratchetwheel. The said actuating-arm is moved orshifted through the medium of a knob or handle R', which is mounted onthe pla-tenspindle at the left-hand side of the machine and which hassliding engagement with the said spindle. The said knob R' is secured toa sleeve r, which slides endwise on the spindle,'and is held at theouter limit of its movement by a spring r', herein shown as made ofcoiled form and inserted between the outer end of the spindle and theouter closed-end of the sleeve r. Said sleeve r is shown as providedwith a separate inner tubular section r2, which is secured in the sameby a screw r3 and which is provided at its outer end with a iiange,between which and the end of the sleeve r is formed an annular groove,in which is inserted an integral sleeve on the actuating-arm S', itbeing understood that said arm is adapted to swing or turn loosely onthe sleeve, but is moved endwise therewith, when pressure is applied tothe knob for the purpose of moving the carriage. Said spring r' isweaker than the carriageactuatingspring, so that the knob will be movedbefore the carriage is moved when pressure is applied to the knob. Theplatenactuating arm is held normally disengaged from the ratchet-wheelby the said spring, which holds the knob or handle at the outer limit ofitsr movement; but said arm is thrust inwardly in the act of moving thecarriage backward to its starting-point, and this engagement willcontinue while the carriage is being moved toward the right and untilthe gear-segment S2, through the action of the second gear-segment andcam-plate, has been moved or swung laterally, as above described; As theactuating-arm is thus swung or moved it will carry with it theratchet-wheel, and the platen will be thereby turned the desireddistance for effecting the line-spacing. As

soon as the carriage reaches the point for beginning a new line it willof course be held from returning by the action of the letterspacingdevices, and upon relieving the knob or handle from the pressure of thehand the said knob and the actuating-arm will .be thrown outwardly bythe knob actuating IOO IIO

spring, thereby disengaging the arm from the ratchet-wheel and leavingthe said arm free to swing backwardly to its original position in thesubsequent forward movement of the carriage. v

The construction described not only affords a simple means forautomaticallyturning the4 platen or line-spacing, but it has theadvantage also of leaving the platen free to be rotated by hand foradjusting the paper with respect to the striking-point of the types atthe time the carriage stands at the extreme limit of its movement to theright and while the actuating devices are still engaged with thecam-plate S5, it being obvious that as soon as the actuating-arm hasbeen released from the ratchet-wheel the automatic line-spacing deviceswill be entirely disconnected from the said ratchet-wheel, and the sameand the platen may be freely turned.

The extent to which the platen is turned for line-spacing is determinedby the extent of oscillatory movement of the actuating-arm, andprovision is made for giving a variable line-spacing by varying thedistance through which the actuating-arm is allowed to swing backwardunder the action of its actuatingspring S4, the saine consisting` ot' amovable stop which limits the rearward swing of the actuating-arm afterit has been advanced to turn the platen. Such movable stop consists of apivot-block S, S and 1l, which is mounted on the pivot-stud s, securedin the end plate of the carriage, said block S6 being adapted for contact with a pin or lug 57 on the inner face of the gear-segment S2 andhaving lateral and end contact-surfaces, either ot which may be broughtinto position for engagement with said pin, so that the block forms astop which when in one position affords a much greater swing to theactuatingarm than when in another position. As a means of actuating saidblock S6 a gear-segment ST is attached thereto, said gear-segm entintermeshin g with a second gear-segment S8,

vwhich is mounted eoncentrically with the platen-shaft in position tointermesh with the iirst gear-segment. Conveniently the twogear-segments referred to are located in a space between theratchet-wheel S and the adjacent end plate ot the machine, andthegear-segment SS is mounted directly on the platen-spindle. The secondgear-segment is provided'with a hand-lever 38, which projects outwardlybeyond and above the ratchetwheel in a position convenient for thefinger of the operator. Suitable means are provided for limiting themovement of the hand-lever, the same consisting, as herein shown, of aprojection s on the inner face of said lever, which projection isadapted for contact with the edge of the end plate E at either side ofthe same. (See Figs. 4E and ll.) These parts are so arranged that whensaid lever .ss is at one limit of its movement the block will presentits side surface, giving to the actuating-arm a movement sufficient fora full-line space, and when at the other limit of its movement the blockwill present its end surface and give a shorter stroke for a half-linespace.

In connection with the line-spacing device described a holding-pawl S,held by springpressure in contact with the ratchet-wheel S, is employedto retain the platen from turning while the printing is beingaccomplished, said holding-pawl being shown as consisting of an L-shapedlever, pivoted on a stud .SW and provided with an arm S10, 0n which aspring S11 acts in a direction to hold the free end of the pawl, whichcarries an antitrictionroller s, against the teeth of the ratchetwheel.In order to enable the platen to be turned or adjusted independently ofthe linefeeding devices, the ratchet-wheel is connected with a spindleby a friction device of the kind shown in a prior patent, No. 562,337,granted to lne June 1G, 1896, and consisting of an inner part S12, whichis rigidly attached to the spindle R, an outerannular part S13, having aconical contact-surface engaging the periphery of the inner part, and aiiat spring s, secured to the inner part and having spring-arms whichbear against the outer part. In connection with such frictional deviceand the holding-pawl S9 a device is provided for holding the said pawlso firmly against the ratchet-teeth as to prevent said ratchet-wheelfrom turning, so that by the application of suitable force to theplatenshaft through the hand of the operator applied to the knob R2 atthe ri ght-hand end of the platen-spindle the platen may be turned whilethe ratchet-wheel remains stationary. Such holding device for the pawlconsists of a hand-lever S12, which is mounted on a pivotstud S15, andto which is attached a cam arm or projection S16, arranged to act uponthe pawl in such manner as to hold the same in engagement with theratchet-wheel so long as pressure is maintained upon the hand-lever in adirection to hold the cam-arm against the pawl. Said cam-arm is sodisposed with relation to the holding-pawl that no permanent engagementor interlocking of the calnarm with the pawl will take place, so thatthe holding-pawl will be free to move and permit the turning of theratchet-wheel so soon as the hand is removed from the lever, therebyinsuring that the parts will be restored to condition for operation assoon as the hand-lever is relieved from pressure.

The spring S11 is shown as made'in the form of a C-spring, which isconnected at one end with a stud s on the end plate of the carriage andis engaged at its other end with the arm S10 of said pawl, said springserving to retain the holding-pawl against the ratchetwheel withsufficient force to prevent accidental turning of the platen, as hasheretofore been common. In order, however, to enable the holding-pawl tobe entirely disengaged from the ratchet-wheel when it is desired torotate the platen in making corrections, lling blanks, the., the leverS12 is pro- IOO IIO

ISO

. tion.

-sls

vided with a second' cam-arm S17, which is adapted to bear againstthe'arm S10 by a backward movement of the hand-lever, this camprojection being so arranged that it will be locked in engagement withthe said arm S10 when the hand-lever is thrown backward, so that aconstant pressure on the hand-lever will not be required to retain thelocking-lel ver away from the ratchet-wheel.

As ameans of holding the hand-lever S12 in an intermediate position andthereby leaving the holding-pawl free to move as the ratchet-'wheel isturned I have provided said hand-leverv with a spring-plug 318, Fig. 13,which spring-plug is adapted to engage a conical recess in the outerface of the carriage end plate at the time when the hand-lever is in anintermediate position or free from both arms of the holding-pawl.

As an improved construction in the margin stop or device for limitingthe rearward movement of the carriage in returning it to itsstarting-point, by which the width of the margin left on the sheet inprinting is determined, devices are provided as follows:

T is a horizontally-arranged rod, which is mounted on the shifting orcarriage-supporting frame at the rear of and parallel with thecarriage-supporting guide-bar F, said rod T` being mounted in guide-lugst t, formed upon the said frame and being adapted to move endwise insaid guide-lug and to also turn or rotate therein. Said rod T carries astop-arm T', which is adapted for contact with the arm or projection T2on'the bottom of the carriageframe, said arm or projection being hereinshown as being cast integral with the lower frame-bar E2 of thecarriage. The shifting of said rod endwise in its bearings affords ameans for changing the length of the line of the Width of the margin atthe left-hand side of the sheet. As a means of adj ustably holding therod in place it is provided at one side with a series of teeth ornotches lf2, adapted for engagement with a spring-actuated pawl T2,which bears against the notched side of the rod when the stop-arm is inoperative position, but rests in contact with the smooth part of the rodand leaves the same free to be moved endwise when the rod is turned tocarry the said arm out of its operative posi- Said spring-detent T2 isherein shown as consisting of a plate-spring secured by screws at itsrear end to the top of the shifting frame and extending at its frontendbeneath the rod T, the said front end of the spring having aturned-up edge 153, Fig. 20, which is adapted for engagement with thenotches of the -rod T when the rod is turned to bring the notchesdownwardly. For convenience in adjusting the said rod T the same isshown as provided with a handle T3 at its outer end and as beingprovided witha scale or index corresponding withthe letter-spaceintervals ofthe machine, said scale or index acting in connection with apointer t4 on the right hand end of the shifting frame.

'said frame at their rear ends.

My-invention also embraces an improved construction'in thepaper-carriage, intended for facilitating the insertion and adjustmentof the paper and the holding of the same in contact with the platen, sothat the paper will move with the platen as the same is turnedvtoaccomplish the line-spacing.

The parts above referred to are-shown more fully in Figs. 4: to l2 andare constructed as follows: To hold or grip the paper against the lowersurface of the-platen where the advance edge of the paper first comes incontact with the platen in the Vact of inserting the sheet, l employ apresser-roller E5, which is mounted at its ends in bearing-blocks e',attached to the forward and free extremities of thehorizontally-arranged spring-arms E6 E6, which are located at oppositeends of the carriage-frame and are rigidly attached to Said springarmsserve to hold the lower presser-roller against the paper and to pressthe same firmly into contact with the platen. To release the said lowerpresser-roller from contact with the platen, as necessary for adjustingthe paper after insertion and sometimes for convenience for insertingthe advanced edge of the paper, a rock-shaft E7 is mounted in the endframe-plates of the carriage and extends longitudinally thereof abovethe spring-arms. Said rock-shaft is provided near its ends with cam armsor projections e2, which are located over and adapted to act upon thespring-arm in a manner to depress the same when the rock-shaft is turnedin a direction to carry the cam-arms against the spring-arms. Saidrockshaft is provided at one end with a hand-lever E8, by which it maybe conveniently turned when desired. A guide-plate E, Figs. 7 and 9, forthe paper is also attached to said springarms, said guide-plateextending forwardly and upwardly from the said presser-roller forguiding the paper after it leaves the said roller. contact with theplaten as it passes upwardly at the front surface of the same toward thestriking-point of the type two other pressurerollers E10 and E11 arelocated at the front of the platen above and below the center line ofythe same. The uppermost of said front rollers E10 is mounted at its endsin two upright supporting-arms e5, Fig. 12, the lower ends of which arepivoted to the machine-frame near the bottom of the same in such manneras to permit the said upper roller to move inwardly and outwardly ortoward and from the platen. As shown in the drawings, the said arms e5are mounted on pivot-studs e.6 on the inner faces of the end plates ofthe carriage, the stud on the left-hand end plate being tubular for thepassage of the trip-rod Q2, as seen in Fig. 7. The lowermost of the saidtwo front rollers is j ournaled at its ends in two supportingarms e7,which arms are pivoted at their upper ends to the inner faces of thesupporting- IOO IIO

roller, the pivotal connection being formed by means of bearing-pivotsc5 on the ends of a horizontal rod E12, which extends across thecarriage below the roller E10. Said bearingpivots pass through the upperends of the said arms e5 and engage the arms e5. Said rod E12 affords asupport for the upper edge of a guideplate E15, which guide-plateextends between the rollers E10 and E11 and serves to guide the advanceedge of the paper after it passes the lower roller E11, so that it shallproperly pass around the front surface ofthe platen and beneath theupper roller E10. For holding both of said rollers E10 and E11 againstthe platen with a spring or yielding pressure two leafsprings E11 areemployed, said springs being attached to the carriage and their lowerends with their upper free ends bearing inwardly upon thesupporting-arms c7 of the lowermost of the rollers at points between theends of said arms. The springs E11 thus arranged operate to throw bothsets of arms inwardly toward the platen by reason of the fact that theybear against the supporting-arms of the upper roller, below the pivotsof the latter, as stated. Adjustable connection of said leafsprings withthe carriage is formed by means as follows: The lower parts of saidsprings are bent or carried inwardly over the rack-bar E2 to pointsinside of the same and are there engaged with pivot-studs e9, Fig. 12,which are secured to the ends of the rack-bar E2. rlhe portions of saidsprings which extend over the rack-bar are engaged by set-screws e111,which pass through said bar and bear against the lower surfaces of thesaid springs, the screws thus arranged serving to hold the upper ends ofthe springs against the rollersupporting arms e1. By raising or loweringthe set-screws the pressure of the free ends of the springs may beincreased or diminished, it being obvious that the said springs willswing upon the studs e'q when the set-screws are thus moved and therebyeffect a movement of the free ends of the springs inwardly or outwardly,according to the direction in which the set-screws are moved.

A strip E15, marked with a scale, is mounted on the free ends of thesupporting-arms e5 of the upper front roller, said arms being extendedpast the bearings of the said upper roller a sufficient distance toafford a proper support for the said strip. The strip ispivotallyeonnccted at its ends with the arms, so that its free edge mayadjust itself with respect to the surface of the platen. Above theplaten are located two paper-guides E1, which are arranged obliquely andextend from points at or near the top of the roller rearwardlyandinwardly, the outer ends of said inclined guides being attached totransverse guidearms E11, which extend to and bear at their front endsupon the scale-bar E15. The inclined guides E1G and guide arms E17 aremounted upon a supporting-rod E15, which is attached to and extendsbetween the carriage end plates at the rear of the platen, the saidguides being provided with two sockets e111 e11, which embrace saidsupporting-rod and which have endwise-sliding but non-rotativeconnection with the rod, so as to retain the guidearms in place over theplaten, the rod and sockets preferably bein g made of square form forthis purpose. The guide-arms E17 serve to guide the side edges of thepaper as it advances over the top of the platen. The oblique guidesE11Jl serve as guides for the forward edge of the sheet, the same, owingto their oblique arrangement and the attachment of their outer ends tothe guide-arms, serving to insure that the front edge of the paper shalladvance without catching or being retarded should it bend or buckle atits.

central part.

With respect to the means used on the paper-carriage for guiding thepaper to the presser-rollers during its insertion and at other times themachine shown is provided with devices as follows:

E1, Fig. 0, is the upper and E211 the lower paper-guide, both made ofsheet metal in the usual manner. The lowerpaper-guide is supported bythe attachment of its ends to the end plates of the carriage-frame andis l0- cated in an inclined position, with its lower and forward edgenear the lower presserroller E5. The upper paper-guide is convenientlymade of curved form and attached at its ends to the carriage and plates,with its front edge near the platen.

V V are the ribbon-spools,which are re movably secured to the upper endsof upright shafts t v, Figs. 25, 26, and 27, which shafts are locatedoutside of the standards D, said spools being so arranged that theribbons extend over the top of the platen and through the severaltype-bars, Fig. 2G. For securing the spools to the shaft n each shaft isprovided with a collar e', carrying an upright eccentric-stud U2, whichis adapted to enter a vertical hole U5 in the spool to afford drivingconnection between the shaft and the spool. The ribbon is wrapped aroundthe spool V, and the said ribbon and spool are inclosed in a stationarycylindric casing V', which is provided with an exit-slot V2 for theribbon. Said `casing is preferably provided with a removable top orcover V5 and is secured to the frame D of the type-bars by means ofscrews, Figs. 2G and 27, or other suitable securing means. The ribbon isguided after its exit from the Casin g V by means'of a slotted guide V",the same consisting of a strip of metalbent into U form and providedwith a shank by which it is attached to said casin g V The lower ends ofthe shafts i; extend below the base-plate of the machine and are thereengaged by driving connections arranged to operate upon either one orthe other of the shafts, so that the direction of movement of the ribbonmay be reversed whenever the ribbon has become entirely unwound from oneof the spools. Such ribben-spool-actuat- IOO IIO

ing mechanism is shown more clearly in Figs.

3 and 25 and is constructed as follows:

V5' is a horizontal shaft arranged transversely of the machine andmounted in bearings r1, so as to rotate and also slide endwise thereon.The upright shafts V are provided on their lower ends with bevelgear-wheels o5, adapted to intermesh with similar gear-wheels U5 on theends'of the shaft V5. Said shaft is made, however, of such length thatonly one pair of the gear-wheels 'U5 e can be engaged with each other atone time, the engagement of one bearing or the other being accomplishedby endwise shifting of the shaft. To provide means for shifting saidshaft endwise, a lever V, Fig. 3, is pivoted beneath the base-plate A ona bracket v1,- said lever o6 being provided with a forked end whichengages a collar @s on the shaft V5. The front end of said lever isprovided with a knob @7,which rises through a slot in the base-plate,near the front thereof, so that the lever can be easily moved by theoperator. A detent-spring V8 is attached to the base-plate and engagesat its end with one of a series of notches o9 in the end portion of thelever lu6,vso as to hold said lever from movement except whenintentionally shifted by the hand of the operator.

Rotary motion is given to the shaft V5 from the intermediate bar O3 ofthe space-bar frame by means as follows, Figs. 24 and 25: Mounted on theshaft V5 is a toothed wheel V1,which forms part of a worm-gear and is-engaged with a worm-shaft V10, located above the said gear-wheel and atright angles with the shaft V5. Said worm-shaft is mounted in dependingarms v10, attached to the base-plate, and is provided between said armswith a ratchetwheel @11. Attached to said bar O3 is an arm V11, whichcarries two spring-pawls @12 and @13. Said paWls rise from the arms V11at opposite sides of the ratchet-wheel 1111, one of said pawls, U12,having a plain end and the other, U13, a hooked end, so that one pawlwill engage and turn the ratchet in the upward movement of thespacing-bar frame and the other pawl will actuate orturn the ratchet inthe descent of said frame.

It follows from the above-described construction that the shaft V5 andone of the spool-shafts will be continuously turned as the space-bar ismoved through the actuation of the keys, motion being transmitted to thespace-bar from the worm-shaft and the wormgear through the shaft V5 inobvious manner. The worm gear-wheel V"J is made of sufficient thicknessto permit e'ndwise movement of the shaft V5 without disengaging saidWheel from the worm-shaft.

The inking-rbbon is provided with guides adjacent to the printing-point,which guides are adapted to hold the ribbon over the point As animproved construction in the ribbonthrow or device for actuating saidguides I employ the construction which is illustrated in Figs. 1, 14,and 15 and is as follows: A rigid supporting-arm W is attached to theshifting carriage-frame and extends to a point in front of the platen.The upper part of said supporting-arm is provided with ahorizontally-extending portion W', to which are pivoted two links w w,Which are of equal length and are arranged one behind the-other andparallel with each other. To the upper ends of said links arepivotedahorizontallyarranged guide-plateW which extends toward theplaten and is provided with two ribbon-guides or guide-loops 'w' w',located at opposite sides of the printing-point. The pivoted linksdescribed afford movement of the gu ide-plate horizontally toward andfrom the printing-point, while maintaining the saidv which extendsdownwardly to and has pivotal engagement with an arm to2 on theescapelever N. The parts are so arranged that when any key is depressedand the escape -lever thereby moved the `upper ends of the links and theguide-plate thereon willbe swung toward the platen, and theinking-ribbon will be carried thereby over the printing-point,

and when the keys are released and the typebars rise said guide-plateand ribbon will be drawn backwardly away from the platen.

On the front frame-bar E2 of the carriage is located an adjustableline-stop, combined with a vbell actuating stop, which is constructed asfollows: X, Figs. 5, 84, and 35, is a sliding line-stop block, which ismounted on a depending longitudinal iiange E21,located on the right-handend of the said bar E2, and is provided with a tooth Q0 at one endadapted for engagement with either one of a series of notches in thelower edge of the ange E21 and also with a spring-arm fr', which engagesa groove in the rear surface of said flange and acts to hold the toothyieldingly inengagement with the notches in the flange. The slide-blockis preferably made of inverted- U form, so as to embrace the lower edgeof the flange E21, and the spring-arm is arranged on the inner face ofthe rear part of the block, with its rear end free and capable ofmovement in a vertical plane, so that the tooth @c may be pushed downfree from the notches in the flange against the tension of thespringarm, which remains constantly in engagement with the said groove.Said slide-block X projects below the fiange E21 and at its left-handend is adapted for contact with the arm or rook IIO

bracket F1'1 on the front edge of the shifting frame. The saidslide-block also carries at its front side a bell-actuating stop X2,which is adapted to engage the upper end of a bellhammer lever Y, Figs.9 and 19, which is located in the path of said arm. The bell-hammerlever Y is shown as attached to a rockshaft Y', mounted in the shiftingframe and provided at its rear end with an arm Y2, carrying a hammer ly,adapted for contact with a bell YS, which is secured to a bracket on therear part of the machine-frame.

I claim as my inventionl. In a type-writer, the combination withkey-levers and a platen of U-shaped typebars of graduated lengths, whoseclosed or looped ends carry type-heads, said type-bars being arranged intwo groups with the axes of the type-bars in each group parallel witheach other but with the axes of the type-bars in the two groupsrearwardly divergent.

2. The combination, with a shifting frame and a carriage mountedthereon,of a rock-shaft operatively connected with the shifting frameand provided with two crank-arms, Stationary guide-arms having curvedguide-surfaces concentric with the crank-arms and independently-movableshifting-levers provided with pivoted actuating-links, said crank-armsand guides being provided with notches, and the said actuating-linkshaving studs adapted to engage said notches.

3. The combination of a shifting frame provided with a rearwardextension or stem, of rocking supports sustaining the carriage and aguide for the said stem, comprising a stationary standard, a guide-ringfor the stem which is confined from lateral movement in the standard,and adjustable means limiting the upward movement of said ring.

4. The combination with the shifting-frame stem, and standard on theframe, of a rocking standard which supports the said stem, a guide-ringengaging the stem, a standard supporting the ring, means on the standardaffording lateral adjustment of the said ring in the standard, and aset-screw acting on the ring to limit its upward movement.

5. The combination with the shifting-frame stem, and standard on theframe, of a rocking standard which supports the said stem, a guide-ringengaging the stem, a stationary standard on the frame, a guide-ringengaging the stem, said ring being held from lateral movement by thestandard, and a removable cap on the standard, by which the ring isremovably confined in engagement with the standard.

G. The combination with a paper-carriage, of a horizontally-movableshifting frame supporting said carriage, an upright shaft on theshifting frame provided with a pinion on its upper end adapted to engagesaid rack; said upper end of the shaft being movable toward and from therack, an escape-wheel on the lower end of the shaft, an escapement-levermounted on the shifting frame and provided with stiff and limber pawls,a vertically-movable spacing-bar, and a yoke-piece, pivoted to theescapement-lever, and having vertically-sliding connection with theshifting frame, said yoke-piece having slotted connection with thespacing-bar.

7. The combination with a platen,a ratchetwheel and a frictionalconnection between the ratchet-wheel and platen, of a spring-actuatedholding-pawl engaging the ratchetwheel, and a pivoted holdin g-detentprovided with a hand-lever and adapted to engage the holding-pawl tothrow it into contact with the ratchet-wheel, said detent being sodisposed with respect to the said pawl as to prevent the parts fromhaving locking engagement with each other.

8. The combination with a platen,a ratchetwheel, and a frictionalconnection between the ratchet-wheel and platen, of a spring-actuatedholding-pawl engaging the ratchetwheel and a holding-detent providedwith a hand-lever and two opposite arms or projections one of which isadapted to engage the holding-pawl to force it against the ratchetwheeland the other of which engages an arm on the holding-pawl to hold thelatter away from said wheel.

9. The combination with a platen,a ratchetwheel and a frictionalconnection between the ratchet-wheel and platen, of a spring-actuatedholding-pawl engaging the ratchetwheel, a holding-detent provided with ahandlever and two opposite arms or projections adapted for engagementwith the holdingpawl and an arm on the same, and a springdetent appliedto retain the holding-detent normally in its central position.

l0. The combination with an endwise-movable carriage and a rotatingplaten thereon, of automatic line-spacing mechanism, comprising aratchet-wheel on the platen-shaft, an oscillatory, endwisc-movable,spring-actuated, platen-actuating arm, a sliding knob on theplaten-shaft by which lthe actuatingarm is given endwise movement, anoscilla- IOO IIO

tory gear-segment mounted concentrically with the platen-shaft and withwhich the actuating-arm has endwise-sliding engagement, a secondoscillatory gear-segment, mounted. on the carriage and intermeshing withthe rst-mentioned gear-segment, and means on said second gear-segmentoperating to give movement thereto when the carriage is moved endwise.

1l. The combination with an endwise-movable carriage and a rotatingplaten thereon, of automatic line-spacing mechanism, comprising aratchet-wheel on the platen-shaft, an oscillatory, endwise-movable,spring-actuated platen-actuating arm, a sliding knob on the platen-shaftby which the actuating-arm is given endwise movement, an oscillatorygearsegment, mounted concentrically with the platen-shaft and with whichthe actuating-arm has endwise sliding engagement, a second oscillatorygear-segment, mounted on

